What is GHSA-cmg9-62q9-xmww?

GHSA-cmg9-62q9-xmww is a security advisory published by GitHub Security Advisories with unknown severity. Neo.mjs contains a command injection vulnerability within the FileSystemService.mjs component of...

Which CVE IDs does GHSA-cmg9-62q9-xmww cover?

GHSA-cmg9-62q9-xmww covers the following CVE IDs: CVE-2026-18482. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-cmg9-62q9-xmwwunknown

Neo.mjs contains a command injection vulnerability within the FileSystemService.mjs component of...

Vendor

GitHub Security Advisories

Published

August 20, 2026

Last Modified

August 20, 2026

🔗 CVE IDs covered (1)

CVE-2026-18482 →

📋 Description

Neo.mjs contains a command injection vulnerability within the FileSystemService.mjs component of the ai/mcp/server/file-system MCP server, where the checkSyntax() and runPlaywrightTest() functions unsafely interpolate caller-controlled absolutePath values into shell commands, enabling arbitrary OS command execution when an AI agent is induced to invoke these tools. Commit 88c77fc fixes these vulnerabilities.

🔗 References (6)

https://nvd.nist.gov/vuln/detail/CVE-2026-18482
https://github.com/neomjs/neo/commit/5acc564ea1b278bca5fab1f8f397a6ba9b849d75
https://github.com/neomjs/neo/commit/88c77fc4
https://novice-22.com/posts/cve-2026-18482-neo.mjs
https://novice-22.com/posts/neo-mjs
https://github.com/advisories/GHSA-cmg9-62q9-xmww